Posted by KB on .
The first three equations I have solved, I would just appreciate someone checking them over to make sure I'm doing them right.
Find the GCF:
16x^2z ,40xz^2 , 72z^3
= 3^3z
Factor our GCF:
a(a+1)  3(a+1)
= a+1
Factor Polynomial:
9a^2  64b^2
= (3a+8b)(3a8b)
9w  w^3
= w(3) (?really unsure if correct?)
I'm not sure how to do the following, or where to even begin. Some help getting started would be very appreciated! :)
Factor Polynomials:
x^3y + 2x^2y^2 + xy^3
x^3 + ax + 3a + 3x^2
Factor:
18z + 45 +z^2

Algebra 
Bri,
Molly can paint a house in 4 days.Tess could paint the same house in 6 days. How long would it take them to paint the house if they worked together